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A core/sheath nanofiber membrane with poly[bis(p-methylphenoxy)]phospha-zene (PMPPh) as the sheath and easily spinnable polyacrylonitrile (PAN) as the core was prepared via a coaxial electrospinning process. Field-emission scanning electron microscopy and transmission electron microscopy were used to characterize the morphology of the nanofiber membrane. It(More)
We proposed a convenient and accurate method for the measurement of lipase activity in a uniform aqueous-based substrate solution. In this work, lipase from Candida rugosa was used as the model lipase to test its catalytic ability toward p-nitrophenyl palmitate (p-NPP), which was suspended in a mixture of p-NPP ethanol solution and buffer. An(More)
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